<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Document</title>
    </head>
    <style>
        div {
            width: 100px;
            height: 100px;
            border: 1px solid #ccc;
            background-color: #f00;
            color: #fff;
            text-align: center;
            line-height: 100px;
        }
        #box {
            width: 800px;
            height: 600px;
            border: 1px solid #ccc;
            background: white;
            display: flex;
            /* flex-wrap: wrap; */
            /* align-content: flex-start; */
            /* justify-content: space-around; */
            align-items: flex-start;

            /* flex-flow: column wrap-reverse; */
            /* flex-wrap: wrap-reverse; */
            /* flex-direction: column-reverse; */
            /* flex-direction: row-reverse; */
        }
        .child-box {
            /* order: 2; */
            /* flex-grow: 1; */
        }
    </style>
    <body>
        <div id="box">
            <div class="child-box">1</div>
            <div class="child-box">2</div>
            <div class="child-box">3</div>
            <div class="child-box">4</div>
            <div class="child-box">5</div>
            <div class="child-box">11</div>
            <div class="child-box">22</div>
            <div class="child-box" style="align-self: flex-end">33</div>
            <div class="child-box">44</div>
            <div>55</div>
        </div>
    </body>
    <script></script>
</html>
